An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any authenticated user can create an EC2 credential for themselves for a project that they have a specified role on, and then perform an update to the credential user and project, allowing them to masquerade as another user. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
| Link | Tags |
|---|---|
| https://security.openstack.org/ossa/OSSA-2020-004.html | vendor advisory |
| https://www.openwall.com/lists/oss-security/2020/05/06/5 | third party advisory mailing list |
| https://bugs.launchpad.net/keystone/+bug/1872733 | third party advisory patch |
| http://www.openwall.com/lists/oss-security/2020/05/07/2 | third party advisory mailing list |
| https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E | mailing list |
| https://usn.ubuntu.com/4480-1/ | third party advisory vendor advisory |
| https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa%40%3Ccommits.druid.apache.org%3E | mailing list |